Apparatus for grinding and treating wire clothed rollers



NOV. 1, 1932. I J, DRQNSFlELD 1,886,088

APPARATUS FOR GRINDING AND TREATING WIRE CLOTHED ROLLERS Filed Dec. 21,1928 4 Sheets-Sheet 1 NV E NTOR: 5me; fironsf'i 5334 4474X? ATr EYs1932- J. DRONSFIELD APPARATUS FOR GRINDING AND TREATING WIRE CLOTHEDROLLERS Filed Dec. 21, 1928 4 Sheets-Sheet 2 MAJ,

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NOV. 1, 1932. J, DRONSFlELD 1,886,088

APPARATUS FOR GRINDING AND TREATING WIRE CLOTHED ROLLERS Filed Dec. 21,1928 4 Sheets-Sheet 3 INVE NTOR;

8Y5 ATTORNEYS Nov. 1, 1932. J, DRQNSFIELD 1,886,088

APPARATUS FOR GRINDING AND TREATING WIRE CLOTHED ROLLERS Filed Dec. 21,1928 4 Sheets-Sheet 4 1 N E NTOR: 5m$ firans/iz/o A TTORNEYS PatentedNov. 1, 1932 JAMES DRONSFIELD, 0F ATLAS WORKS, OLDHAM, ENGLAND APPARATUSFOR GRINDING AND TREATING WIRE CLOTHED ROLLERS Application filedDecember 21, 1928, Serial No.

Cylinders and rollers clothed with saw tooth wire are Well known in thetextile trade and it is common practice to true the wire, as also togrind the wire clothing and to burnish in separate machines.

So far as I am aware it is not however known to grind and burnish suchsaw tooth wire in a single onemachine, and the present inventioncontemplates a machine wherein both grinding and burnishing can beeffected as successive operations in the one and the same machine.

I propose to construct a machine which will be capable of performingboth these operations upon a saw-tooth wire-covered roller and whichmachine affords facility in getting the clothed roller into position andin removing it.

The important novelty, quite apart from the complete construction, liesin the use of ahead wherein can be carried the traversing grindingmechanism and also the burnishing mechanism each settable to the sawtooth wire covered roller, while the burnishing mechanism can beinstantly lowered to any set position, and readily elevated clear out ofthe way for the introduction or removal of a saw-tooth wire-clothedroller. Further, there is provided a circular setting motion to regulatethe operative action of the grinding mechanism and the burnishingmechanism which are controlled from and operate about a common centre.

For the purpose of fully disclosing the invention, I shall now describethe same with the help of the accompanying drawings, wherein:

Fig. 1 is an end elevation from the lefthand end of the machine.

Fig. 2 shows an end elevation from the right-hand end,'and,

Figs. 3 and 3a together illustrate a broken front elevation of themachine.

Fig. 4 is a detail sectional view on an enlarged scale, taken on theline IVIV of Fig. 1.

Referring to the drawings, a, a designates the end standards of themachine, which end standards are connected by a main cross rail (0 uponwhich are secured a pair of sha 327,544, and in Great Britain March 3,1928.

hearing brackets b in which is mounted for rotation the axle a" carryingthe usual saw-tooth, wire-clothed roller 7-. The axle is removably heldin its bearings by a pair of bearing caps b, which are perforated attheir opposite ends to permit the passage therethrough of a pair ofthreaded studs 5 carried by the bearing brackets, the caps beingmaintained in position by a pair of knurled nuts 6 threaded on the studsb The roller r may be driven by a belt 1 passing over a pulley 1"secured on the axle 1', said belt receiving its motion from a secondpulley r secured to the shaft of a chain wheel r over which passes achain 1", said chain receiving motion from a second chain wheel rsecured on a driving shaft 8. A guard 7" may be provided for the chain1- It will be obvious that the roller may be driven in any otherconvenient manner.

Secured on the end standardsv a, a at opposite ends of the machine are apair of supporting brackets 0, each of which is provided on its outersurface with an annular boss or flange a, best shown in Fig. 4, whichflange is engaged by a similar flange formed on a circular disc 0 saiddiscs being each partly rotatable around a central pivot c secured inthe supporting brackets 0. Each of the discsc is provided on itsperiphery with a few teeth a in mesh with a pinion secured on a shaft 0which extends longitudinall through the machine. Secured on the cadjacentto each of said pinions c is a quadrant 0" provided on itsperiphery with worm gear teeth in mesh with a worm c secured on a shaft0 having at its outer end a hand-wheelc for afi'ording manual rotationof the shaft in a manner similar to the gear well known in connectionwith setting motions for card grinding machines. From this descriptionit will be seen that when the hand wheel 0 is rotated in one or theother directions such rotation will be transmitted to the discs 0 sothat the mechanism associated therewith as hereinafter described will beoperated.

Suspended from the pivots c of the discs 0 are a pair of pendent bracketarms or hearing plates d, each of which is secured to its comparisondisc by a bolt 11 passing through an elon ated perforation in the armand secured in t e disc, (see Fig. 2), whereby the arm is capable ofslight angular adustment with relation to the disc. The racket arms dare provided at their lower ends with hook-shaped portions d formingbearings for a shaft 6 on which is secured the traversing grindingroller 6 and a diflerential motion 6 This differential motion is of wellknown construction, it having been shown in my prior Patents Nos.500,322 and 1,785,731.

It will be obvious from the foregoing that when the discs 0 are rotatedin one direction the lower ends of the arms at will be moved toward thesaw-toothed wire-covered roller 1' thus carr ing the traversinggrinder einto contact with said roller, whereas rotation of the discs in theopposite direction will carry the ginder out of contact with thesaw-tooth roller.

One of the objects of the invention is to provide burnishing means .sodisposed and operated relatively to the grinding roller 6, that, in thenormal operation of the device, the motion which carries the grindingroller 6 out of contact with the saw-tooth, wireclothed roller 9" willcarry the burnishing means into contact with said saw-tooth roller, andvice versa, means being also provided whereby both the grinding rollerand the burnishing means may be carried out of contact with thesaw-tooth, wire-clothed roller thereby to permit the ready removal ofsaid roller from its bearin s and its replacement therein. To this endmount on pivot studs or centres 03, and at the rear faces of thecircular discs or large wheels 02, brackets h, h whose fulcrum is on thepivot studs. One of these brackets h is. a plane type, and provided withan opening for the receptioxof a bearin g for one end of the axle of aburnishing rush or roller g, while the other bracket h has securedthereto a bridgingpiece k2 which projects laterally over a circular disc02 at The end where the operator controls. This bridge piece 7L2 has acurved slot h3 concentric with the circular disc 02 and lying in a planeparallel to the face of the latter.

The brackets h and h in addition to being mounted on the fixed studs orcentres 03 are also mounted on and pinned to an independent shaft 7'2disposed in axial alinement with the studs 03, each end of which shaft7'2 extends part way through the fulcrum hubs h 9 of the brackets h and71. (see Fig. 4). The portions of the hubs 729 into which the ends ofthe shaft ;)'2 do not penetrate obviously form bearings to fit closelythe shaped inner extremities of the studs or centres 03. Thiscombination ensures a rigid interconnection between the brackets h, hand a stiffening of the structure on this axial line.

To return to the bridge-piece b2 and the slot therein marked h3. Thereis a stud k4 extending laterally from the circular disc 02 through saidslot b3, and clamping provision in the form of a nut k5 threaded on saidstud and having a lengthened rod or bar k6, by which the bridgingstructure M2 and bracket b can be clamped at any time so as to fix therelative disposition of the burnishing brush or roller 9 to thetraversing grinder e. Releasing of the clamping nut k5 will allow thebridging piece b2 and interconnected brackets h, h to become movable adistance governed by the length of the slot k3. In order that a definitedownward movement of the burnishing brush or roller 9 can be counted onor arranged for, I provide a milled headed graduating screw it? in thebridging piece 722 which can be set as to its lower extremity to thestud k4 in the curved slot k3 so that even if the clamping nut k5 bereleased the burnishing brush or roller 9 cannot fall or move beyond theregulated amount (governed by the position of the graduated screw 7L7).Thus, the set of the burnishing brush or roller 9 can be governed withrespect to the disposition of the traversing grinder 6. This is in spiteof the fact that, on releasing the nut k5, the burnishing brush orroller 9 can be lifted by grasping the handle b8 and rotating thebracket h on its pivot the full remaining range of the slot b3 therebyto permit removal or introduction of the saw-tooth wire clothed roller1' to be dealt with.

The opening or lifting of the burnishing brush or roller 9 as abovestated gives free and unrestricted facility for introduction or removalof the saw-tooth wire-clothed roller 1' and the burnishing brush orroller 9 can be held open or elevated by tightening the clamping nut715. When the said roller 7' is in place, the burnishing brush or roller9 can be lowered to the desired position by releasing the nut h5 andsetting the graduated J screw k7. The relative disposition of traversinggrinder and burnishing brush or roller is thus under full control at alltimes. If the actuating hand-wheel 010 is operated in one direction,then the traversing grinder e comes into action on the roller 1. Oncompletion of the grinding, then by turning the hand-wheel 010 in theopposite direction, the traversing grinder e is moved away from theroller 1' and the burnishing brush or roll er 9 comes into action. Theburnishing brush or roller group has combined therewith a traversemotion as indicated at i in Fig. 3, the link connection 71 being pivotedto 2. lug depending from the bearing g2 for the shaft of the burnishingbrush .or roller g. Such traversing motions are well known in the artand it is therefore believed that further description herein isunnecessary.

There is preferably provided a curved CPI sheet metal guard j for theburnishing brush or roller 9, which guard j is carried on arms 7", j,said arms having hubs or sleeves 1'3 fitting the shaft 3'2, as indicatedin broken lines in Figs. 3 and 3a. As a result when the brackets h, itmove and carry the burnishing brush or roller down or up the guard movesalong therewith, being supporte from the shaft i2 which moves with thebrackets h, h.

The movable bracket structure it at the manipulating end of the settingmotion, as hereinbefore stated, is provided with a handle k8 by which toraise and lower the burnishing brush or roller mechanism when theclamping nut k5 is released.

The manner of driving the traversing grinder e and the burnishing brushor roller 9 can be varied, but I propose to use a double V leather linkbelt, indicated by the line k in Figs. 1 and 2. This belt passes fromthe grooved pulley k on the main driving shaft 8 upwards over a groovedpulley 704 on a pivoted weighting compensating bracket k5 fulcrumed at106, then partly around a grooved pulley 753 on the axle of theburnishing brush or roller 9 and then around a portion of the peripheryof a grooved pulley k2 on the traversing grinder axle e and so downagain to the grooved pulley 10 on the main shaft 8.

This drive compensates for the necessary settings or adjustments of thetraversing grinder e and the burnishing brush or roll- 'i he action ofthe machine is such, that the traversing grinder e grinds from the pointto the back of the teeth and therefore does not spoil the point oreffective edge and leaves any burr at the backof the tooth andconsequently the burnishing brush or roller can remove these burrs onthe long edges of the teeth. I find these burrs can be readily removedfrom the long edges of the teeth by the burnishing brush or roller g.

Rollers can be ground and burnished very efi'e'ctively and expeditiouslyby the new machine.

The device marked 'D is the blown dressing attachment which is traversedto dress the saw-tooth wire clothing by the engagement of its dressingtool or tools with said wire.

It is also to be understood that rollers or cylinders clothed withsaw-tooth wire and of various diameters, and lengths, can be operated onby adjusting and setting the brackets, and their supports, on and inconnection with the bed of the machine, all of which is known.

The mode of operation of the apparatus is as follows: The saw-toothroller r is supported by its axle r in the bearing brackets and theremovable caps b placed in position on the studs 6 and the clamping nutsI) tightened thereon. The dressing device D is then adjusted as to itsknown tools between the ranks of saw-tooth wire on roller 1* so thatWhen'the roller is driven by belt 1- the saw-tooth tools are traversedand the wire is dressed. After dressing the device D can be backed offby rotating the screw D anticlockwise. Thereafter, the teeth of thesawtooth wire are ground by the known traversing grinder e which is.moved into contact with roller r by operating the hand Wheel 0 as hereinbefore described. After the teeth have been sufficiently ground, thehand wheel 0 is rotated in the opposite direction thereby to swing thegrinder back or out of action and simultaneously carry the burnishingbrush g into contact with the teeth of roller 1' to burnish them ashereinbefore described. On completion of the burnishing operation, thebrush may be moved back by again reversing the rotation of the handwheel, whereupon the bar it may be lifted to release the nut it, and theoperator may grasp the handle it and raise the burnishing brush as faras the stud k**and slot 72. will permit, whereupon the finished roller 1may be removed and another inserted.

I declare that what I claim is:

1. An apparatus for grinding and burnishing saw-tooth wire on rollers,comprising a framework, adjustable means mounted thereon for carrying aroller to be operated upon, driving means for the roller, bracketssupported on said frame, a movable head mounted for rotation on saidbrackets, a grinding device pivoted for bodily movement concentric withsaid head and rotatable about its own axis, means for traversing anddriving said grinding device, a burnishing brush movably supported onconcentric relation to said head, means for adjusting the brushangularly with relation to the head, means for driving said burnishingbrush, manually operable means for moving the brush supports, andmanually operable gear mechanism associated with said head for rotatingthe same thereby to bring the grinding device and burnishing brushalternately into action on said roller.

2. An apparatus for grinding and burnishing saw-tooth wire on rollers,comprising means for removably supporting for rotation a roller to beoperated upon, means for driving said roller, a movable head pivotallysupported in juxtaposition to said roller, a grinding device supportedfor rotary and axial movement at one extremity of the movable head,means for driving and traversing said grinding device, a burnishingdevice supported in movable brackets in the movable head, means foradjusting said brackets angularly with relation to the head, means forclamping the brackets in adjusted positions, means for driving theburnishing device, and manually operable gearing associated with thehead for bringing the grinding device and the burnishmg device intoaction alternately.

3. An apparatus for grinding and burnishing saw-tooth Wire on rollers,comprising means for removably supporting for rotation a roller to beoperated upon, means for driving said roller, a movable head pivotallysupported in juxtaposition to said roller, gearing for actuating saidhead, supports pivoted concentrically with the head and carrying arotatable and axially movable grinding device, means for traversing anddriving said grinding device, brackets adjustable angularly withrelation to said movable head, means for clamping said brackets in anyadjusted position, burnishing device carried in said brackets, means fordriving said burnishing device, and means for supporting the movablehead in one position during grinding and in another position duringburnishing.

4. An apparatus for grinding and burnishing saw-tooth Wire on rollers ina single apparatus, comprising adjustable supports for the roller to beacted on, means for driving said roller, a pivotaly mounted headsupported in juxtaposition to said roller, adjustable brackets mountedfor pivotal movement concentric with said head, a grinding devicecarried by the head and mounted for rotary and axial movement, means fortraversing said grinding device, a burnishing brush mounted for rotationin said brackets, means for driving said grinding device and burnishingbrush, manually operable gearing associated with said head for bringingthe grinding device and the burnishing brush into operation alternately,and means for adjusting and clamping the brackets in any adjustedposition with relation to the movable head.

5. An apparatus for grinding and bur nishing saw-tooth Wire on rollers,comprising means for supporting and driving a roller in position to beoperated on, a head pivotally supported in juxtaposition to said rdller,supporting brackets mounted for adjustment on said head, manuallyoperable gearing engaging said head for actuating ,the same, a rotatableand exially movable grinding device supported for bodily movement aboutthe axis of said head, means for traversing said grinding device, aburnishing device mounted for rotation in said supporting brackets,means for driving said grinding and burnishing devices, means foradjusting said brackets and clamping them in adjusted positions,disengageable brackets permitting wire roller, and means for holding thegrinding and burnishing devices in aitern ate operativepositions.

6. An apparatus for alternately grinding and burnishing saw-tooth Wireon rollers, comprising means for removabiy supporting for rotation aroller to be operated upon, means for driving said roller, supportingbrackets disposed adjacent to the ends of said roller, a movable headmounted for rotation on said brackets and carrying a grinding roller anda burnishing brush, said grinding roller and burnishing brush beinginclependently adjustable angularly of said head, independent means forclamping said roller and brush in adjusted positions, means tortraversing and driving the grinding roller, means for driving theburnishing brush, gearing associated with said head for actuating thesame, and adjustable means for regulating the angular movement of theburnishing brush thereby to facilitate insertion and removal of theroller.

7. An apparatus for grinding and barnishing saw-tooth Wire on rollers,comprising means for sup orting aroller for rotation in position to eoperated on, means for driving said roller, supporting brackets disposedadjacent to the ends or" the roller, gear wheels mounted for rotation onsaid brackets, supporting members pivoted for movement concentric withsaid gear Wheels, a grinding device mounted for rotation in saidsupporting members, means for clamping said supporting members againstmovement independently of the gear Wheels, means for traversing anddriving said grinding device, independently movable supports pivoted formovement concentric With said gear wheels, a burnishing brush mounted insaid supports, means for clamping said supports against movementindependently of the gear Wheels, adjustable means for limiting themovement of the burnishing brush supports, and means for driving theburnishing brush.

In testimony whereof I have signed my name to this specification.

JAMES DRONSFIELD.

ready removal or insertion of the saw-tooth

